International standard aviation aluminum raw materials, after Japan's high-precision CNC machining (precision 0.001mm), the use of German imports of tungsten steel cutting tool to ensure processing accuracy, each finished or semi-finished products have to undergo a rigorous quality standard test (0.01mm) to ensure that each batch Times of consistency. Through the aerodynamic layout design of the 5010 / 300kv rotor inside the use of "fan" in the form of more effective cooling of the stator, the rotor using high-precision dynamic balancing instrument debugging to the best (0.05g or less), the use of imported bearings, all hand winding. Each motor factory has been dynamic, static test, to ensure the consistency of the motor.Use: suitable for six rotor, eight rotor, mostly professional aerial photography UAV, suitable for paddle range 20-22 inch.Motor characteristics: high efficiency, heat fast, large pull.